Casement windows are traditional English windows also popular in the Netherlands and the Scandinavian countries. Their distinct structure makes these windows more durable, more airtight and safer. An additional great advantage of this system is a sash that opens to the outside, rather than to the inside, like in most European countries. As a result, we get more space in the room and the interior arrangement potential is changed. We can organise the windowsill and the internal space around these windows in any manner.
Casement windows are also well-known for the best level of airtightness, which has been confirmed by many tests.